JP2008295526A - Pad for correcting ring size - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pad for correcting a ring size, even if wearing a ring size correction device for a long time, being used without discomfort caused by constriction of a finger, surely integrated with the ring without falling from the ring and safely used. <P>SOLUTION: This pad for correcting the ring size is attached along the inside of a ring A, consists of a part of or the whole of an annular body 1 formed of low-resilience polyurethane foam with a prescribed thickness, and coated with antislip coating 2 on the surface of the annular body 1. This pad is formed of the low-resilience polyurethane foam and its repulsive elastic force is weak so as not to give an oppressing feeling to the finger and increase the blood flow due to a time lag in a return time after the elastic deformation. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a ring size correction pad for correcting a difference in diameter between a finger diameter and a ring diameter by attaching a pad inside the ring.

A ring that has been used carefully for a long period of time or a ring made of precious metal that has been stored may not match the user's finger diameter.
This is a work that requires skill to adjust the size of the ring, and it requires repair at a specialized store, so it is difficult to adjust it frequently, and it is noticed that it has been used for many years without adjustment after the ring is purchased. This is because the physique changes before the finger diameter changes gradually.

For example, as the age increases, the finger diameter gradually decreases, and when the diameter difference between the finger diameter and the ring diameter increases to a certain extent, the ring tends to come off from the finger and the risk of losing it increases.
Of course, if you go on a diet, the finger diameter may suddenly narrow.
Even if the risk of loss does not increase, the ring pedestal and the weight of the gemstone can easily rotate around the finger, causing the position and posture of the ring to become unstable and poorly looking Is often the case.

  By the way, when such a problem occurs, there is known a ring size correction pad that easily corrects the difference between the finger diameter and the ring diameter. For example, a flexible resin such as silicon rubber is used as a ring. There is known a ring corrector that is formed into a ring and is used by being fitted inside the ring (Patent Document 1).

  In addition, there is an oval spherical pad that can be used by interposing the gap between the finger ring and the ring on the ventral side of the finger, and the material is general foamed polyurethane or sponge with sponge resilience. Known (Patent Document 2).

Utility Model Registration No. 3122653 (Claims, FIG. 1) Japanese Patent Laid-Open No. 11-244016 (3rd sentence of paragraph [0022])

  However, the above-described conventional ring corrector corrects the difference between the diameter of the finger and the diameter of the ring by the repulsive force of a normal elastic material. If you continue to use it for a long time, you will always be able to tighten your fingers. This will cause a feeling of pressure, decreased blood flow, reduced breathability, and other discomforts. There is.

In addition, in the pillow-type pad made of foamed polyurethane described in Patent Document 2, the type of foamed polyurethane is common, and no adjustment is made so as not to press the finger.
Since such a pillow-type pad is not sufficiently integrated with the ring and may fall off the ring, the position and posture of the ring are likely to be unstable.

  Therefore, the problem of the present invention is to solve the above-mentioned problems, and the ring size correction tool can be used without discomfort such as tightening the finger even for a long time, and is securely integrated with the ring without falling off the ring. It is to make a ring size correction pad that can be used with confidence.

  In order to solve the above-described problems, in the present invention, the ring size correction pad is formed of a part or the whole of an annular body made of a low-resilience polyurethane foam having a predetermined thickness attached along the inside of the ring. is there.

  The ring size correction pad of the present invention configured as described above has a form made up of a part (arc type) or the whole (ring type) of an annular body, and has a finger diameter and a ring along the inside of the ring. It consists of a low-resilience polyurethane foam with a wall thickness greater than the difference in diameter, and its resilience is so weak that it hardly gives the finger a feeling of pressure.

  In addition, the correction pad made of low-resilience polyurethane foam has a much slower recovery speed than that of normal foamed polyurethane because it is compressed and deformed. It is considered that the blood flow volume increases due to a time lag in the later return time.

  The ring size correction pad is not necessarily one that uses the entire annular body, but if the difference in diameter between the finger and the ring is small and it is not necessary to use the entire annular body, a part of the pad is used as appropriate. It is also possible to cut a portion with a scissors or a cutter and use only a part of the annular body in an arc shape with an appropriate length.

When used in this manner, there is no discomfort that can tighten a finger even after long-term use, and the ring can be securely held.
In order to prevent the ring and the size correction pad from shifting, it is preferable to use a ring size correction pad in which a non-slip paint is applied to the surface of the annular body.

In addition, for the size correction of the above-mentioned ring provided with a non-slip convex portion made of a gel-like resin molded body in place of the anti-slip paint or together with the anti-slip paint and protruding from the contact surface with the ring ring It can also be a pad.
The non-slip convex part is made of a gel-like resin molding and has adhesiveness, and also protrudes from the contact surface of the annular ring with the ring, so that the locking force between the finger surface and the pad is improved. Also, it is possible to stop the pad displacement movement that cannot be stopped only by the anti-slip paint.

  If a polyurethane resin-based paint is used as the above-mentioned anti-slip paint, it has good affinity with the low-resilience polyurethane foam and exhibits necessary and sufficient adhesiveness.

Since the present invention is a ring size correction pad made of a part or the whole of an annular body made of a low-resilience polyurethane foam having a predetermined thickness attached along the inside of the ring, the ring correction tool can be used for a long time. However, there is an advantage that there is no discomfort such as tightening a finger.
In particular, anti-slip paint applied to key points, especially those provided with anti-slip projections, can be relieved because the pad can hold the ring stably without sliding off between the ring and the finger. There is also an advantage that it can be used as a pad for correcting the size of a ring that can be used.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
The thing of 1st Embodiment shown in FIGS. 1-5 is the pad for size correction of the ring which consists of the whole cyclic | annular body 1 which consists of a low-resilience polyurethane foam of the predetermined thickness attached along the inner side of the ring A, A ring size correction pad in which an anti-slip coating 2 is applied to the surface of an annular body 1.

  As shown in FIGS. 1 and 2, when the annular body 1 is inserted and fitted into the finger F, and then the ring A is fitted over it, the ring body 1 is almost invisible.

  As shown in FIG. 3, the annular body 1 is preferably formed with a concave curved surface in order to improve the alignment with the inner peripheral surface of the ring A and improve the adhesion.

Then, as shown in FIGS. 4 and 5, the anti-slip coating 2 is applied to at least the concave curved surface. It is also preferable to apply the anti-slip coating 2 on the surface in contact with the finger.
In the case where the effect of the anti-slip paint 2 is remarkable, the outer peripheral surface 1a may not be formed as a concave curved surface but may be formed as a flat surface.

  As the low resilience polyurethane foam used in the present invention, it is possible to adopt a foam-molded well-known polyurethane resin material in which a plastic component is adjusted so as to be low resilience. The low resilience polyurethane foam may be prepared by reacting an isocyanate compound and a polyol in the presence of a catalyst such as amines, or by previously reacting an isocyanate compound and a polyol to produce a prepolymer having an NCO terminal. It may be cured by mixing with a curing agent such as polyol.

  Examples of the isocyanate compound include conventionally known aromatic polyisocyanates such as diphenylmethane diisocyanate (MDI), tolylene diisocyanate (TDI), polymethylene polyphenyl polyisocyanate (diphenylmethane diisocyanate crude product); Or a mixture of two or more aliphatic isocyanates.

  Examples of the polyol include polyether polyol, polyester polyol, and polymer polyol. Examples of the polyether polyol include polypropylene polyol (PPG) and polyethylene polyol (PEG).

  These polyols may be used singly or in combination of two or more, but in any case, those having a weight average molecular weight of 300 to 2000, particularly 500 to 1500 are used. Is preferable in terms of reactivity and workability.

  In the production of a low-repulsion open-cell flexible polyurethane foam, it is also preferable to use additives such as known catalysts, foaming agents, foam stabilizers, colorants, antioxidants and the like.

  As the foaming agent, known foaming agents can be used, and water, methylene chloride and the like are exemplified, and it is particularly preferable to use water or a foaming agent using water and methylene chloride in combination.

  A preferred low-repulsion open-cell flexible polyurethane foam is a copolymer polyether polyol compound of ethylene oxide and propylene oxide, which can be produced using a polyol compound having an ethylene oxide content of 20 to 90% by weight. it can.

The air permeability and the average cell diameter can be adjusted by a known method, and can be controlled, for example, by adjusting the type of foaming agent, the amount added, the type of foam stabilizer, and the amount added.

  Other conditions include, for example, a polyol having an average number of functional groups of 2 to 5 and a hydroxyl value of 20 to 60 mgKOH / g, a polyol having an average number of functional groups of 1.5 to 4.5 and a hydroxyl value of 200 to 300 mgKOH / g, and an average number of functional groups. Polyurethane foam (Japanese Patent Laid-Open No. 9-124762), which is a combination of three polyols having a hydroxyl ratio of 2 to 6, a hydroxyl value of 80 to 150 mgKOH / g, and an ethylene oxide unit content of 5 to 30% in a specific ratio It is also preferable to do.

Producing a low resilience polyurethane foam in this way has a density of, for example, about 96-192 kg / m ³ and restores less than about 90 percent of the initial cross-sectional dimension within 45 seconds from 80 percent compression. What has low rebound resilience to the extent that it has a sufficient recovery rate can be obtained.

  As the anti-slip paint used in the present invention, urethane resin paint such as urethane resin paint or urethane resin wax is preferable from the viewpoint of workability and elasticity of the coating, and two commercially available liquids with good workability of application. A type of urethane resin paint can be used. It is also preferable to add a phthalate ester, which is a well-known tackifier (plasticizer), in order to increase the tackiness.

A second embodiment of the present invention will be described below with reference to FIGS.
The annular body 3 according to the second embodiment is formed of a gel-like resin molded body on the outer peripheral surface of the annular body according to the first embodiment, and a plurality of rod-shaped and rod-shaped (the illustrated one is 8 at 45 degree intervals around the axis). The non-slip convex portions 4 are arranged in parallel at appropriate intervals in the annular circumferential direction, and the lower portion is embedded in the low-resilience polyurethane foam, for example, 0.5 to 1 mm. It is fixed in a protruding state.

  The gel-like resin molded body only needs to be a resin molded body having adhesiveness on the surface. Examples of the resin material having gel-like adhesiveness include elastomers made of styrene, urethane, acrylic resin, and the like. Examples of commercially available urethane elastomers include NAGFLEX-PU manufactured by Inoac Corporation.

  The shape of the gel-like resin molding may be a known three-dimensional shape such as a spherical shape, a hemispherical shape, an elliptical spherical shape, and a semi-elliptical spherical shape in addition to the short rod shape shown in the figure, and the friction coefficient becomes as high as possible. What was formed so that it might become a projection with a good touch is preferable.

  The ring size correction pad formed of a part or the whole of the annular body as in the second embodiment prints the cut lines 5 around the annular axis at other appropriate intervals, for example, at intervals of 120 degrees. It can be displayed and divided by the user with a knife or scissors if necessary. The divided arc-shaped piece can be used as a size correction pad suitable for filling a very small gap between the ring and the finger.

The perspective view which shows 1st Embodiment and the ring for wearing. The perspective view which shows the use condition of 1st Embodiment. An axial sectional view of an enlarged main part showing a use state of the first embodiment The principal part expanded sectional view explaining the application location of the anti-slip paint of 1st Embodiment The principal part expanded sectional view explaining the application location of the anti-slip paint of 1st Embodiment Partial cross-sectional front view showing the second embodiment with a part cut away Axial sectional view of an enlarged main part of the second embodiment

Explanation of symbols

1, 3 Annulus 2 Non-slip coating 4 Non-slip projection 5 Cut line A Ring F Finger

Claims (4)

  A ring size correction pad comprising a part or the whole of an annular body made of a low-resilience polyurethane foam having a predetermined thickness attached along the inner side of the ring.   A pad for correcting the size of a ring, comprising a part or the whole of an annular body made of a low-resilience polyurethane foam having a predetermined thickness attached along the inner side of the ring, and having a non-slip coating applied on the surface of the annular body .   The pad for correcting a size of a ring according to claim 2, wherein the anti-slip paint is a polyurethane resin-based paint.   The ring according to claim 2 or 3, wherein an anti-slip convex portion made of a gel-like resin molding is provided on the contact surface with the ring ring in place of the anti-slip paint or together with the anti-slip paint. Size correction pad.

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